Enabling lean gas Enclosed Flaring for Schlumberger
- Oct 1, 2021
- 2 min read
Updated: 3 days ago
Client: Schlumberger
Sector: Oil & Gas – Upstream Production Operations
CRA Role: Engineering, Manufacturing, Installation & Commissioning
System: Enclosed Ground Flare for Producer Gas Disposal
Overview
In upstream oilfield operations, excess producer gas poses a safety, emissions, and operational risk if not properly handled. Schlumberger, on behalf of Cairn India, engaged CRA to engineer a robust enclosed ground flare system to safely combust variable producer gas streams at an onshore production site.
The system was engineered, manufactured, installed, and commissioned under a full turnkey scope, addressing strict oilfield safety, emissions, and operational standards.
The Challenge
Highly variable flow and gas quality: Field conditions resulted in fluctuating gas compositions that required stable combustion control.
Emissions compliance: Ensuring smokeless, efficient combustion in line with Oil & Gas sector environmental and safety regulations.
Compact site footprint: Delivering full thermal containment and combustion efficiency within constrained oilfield plot space.
Rapid integration: Aligning with Schlumberger’s tight site commissioning timelines without disrupting broader field operations.
Our Solution
Engineering & Design
Enclosed combustion system sized for variable producer gas loads
Automated pilot ignition and flame detection systems
Thermal radiation calculations to ensure personnel and equipment safety
Fabrication & Assembly
In-house manufacturing of flare stack, combustion chamber, seal pot, and skid-mounted ignition panel
Heat-resistant linings and corrosion-protected surfaces designed for long-field life
Installation & Commissioning
Full mechanical and piping integration into Schlumberger’s gas handling skid
On-site functional testing, ignition tuning, and flare performance validation
Results
Reliable disposal of excess gas under variable flow conditions
Field-proven combustion stability with no visible emissions
Seamless integration into onshore oilfield operations
Compliance with Oil & Gas safety and environmental standards
Fully automated, low-intervention operation post-commissioning
